Riyad as-Salihin
Riyad as-Salihin 1518
The Prohibition of Backbiting and the Commandment of Guarding one's Tongue
Arabic hadith text
وعن ابن عمر رضي الله عنهما قال: قال رسول الله صلى الله عليه وسلم: "لا تكثروا الكلام بغير ذكر الله، فإن كثرة الكلام بغير ذكر الله تعالى قسوة للقلب! وإن أبعد الناس من الله القلب القاسي". رواه الترمذي.
Translation
Ibn 'Umar (May Allah be pleased with them) reported
The Messenger of Allah (ﷺ) said, "Do not indulge in excessive talk except when remembering Allah. Excessive talking without the Remembrance of Allah hardens the heart; and those who are the farthest from Allah are those whose hearts are hard."[At-Tirmidhi]